Model 22 Access Station

While the Model 2 Central Controller can be used completely "stand-alone," the Model 22 Access Station can be used to provide additional IFB origination locations. Model 22s are installed at positions convenient to producers, directors, or others who need to cue talent and related personnel. As many as four Model 22s can be used with each Model 2 Central Controller.

The Model 22 consists of a metal chassis containing two lighted pushbutton switches, microphone and line inputs, and status and control circuitry.

The mic input is configured for the connection of an electret gooseneck microphone. The line input, compatible with balanced and unbalanced signals, allows another piece of communications equipment to provide interrupt audio. This allows direct interfacing with intercom systems from companies such as Telex®/RTS® and Clear-Com®.

Several mounting options are available. One adapter allows the Model 22 to be mounted in a single rack space (as shown). A second adapter is used to install the Model 22 in a table or console opening.

Mounting:
Rack mounted using Model 25A 19-inch Rack Adapter (purchased separately); panel mounted using Model 28A Panel Adapter (purchased separately). Custom mounting easily accomplished.

Interconnection: two 9-pin D-subminiature connectors (female), one intended to link Model 22 to Model 2 Central Controller, the second designed to allow "loop through" installation for connection to additional Model 22(s)

Interrupt Switches: 2
Type: back lit, momentary, EAO 99-series
Tactile Sensation: excellent!

Audio Input: electret microphone or line level, switch selectable

Microphone Input:
Compatibility: designed for use with Studio Technologies’ Model 11A gooseneck microphone (purchased separately)
Connector: three terminals on screw terminal strip

Line Input:
Type: electronically balanced, capacitor coupled, compatible with balanced or unbalanced audio signals
Input Impedance: 24 k ohms
Input Level: –15 to +10 dBu, adjustable via trim potentiometer
Connector: two terminals on screw terminal strip

Monitor Muting: switch selectable, allows Model 22 interrupt activity to mute monitor amplifier on Model 2 Central Controller

Power Requirements: +18 Vdc filtered and regulated, 25 mA maximum, provided by Model 2 Central Controller

Dimensions (Overall):
6.40 inches wide (16.3 cm)
21.60 inches high (4.1 cm)
5.20 inches deep (13.2 cm)

Weight: 0.8 pounds (0.35 kg)

Specifications subject to change without notice.

Additional Information:
Data Sheet	User Guide	Block Diagram